instiki/app/views/wiki/edit.rhtml

<% 
  @title = "Editing #{@page.name}"
  @content_width = 720
  @hide_navigation = true
%>

<%= "<p style='color:red'>Please correct the error that caused this error in rendering:<br/><small>#{@params["msg"]}</small></p>" if @params["msg"] %>

<%= render("#{@web.markup}_help") if @web %>

<form id="editForm" action="../save/<%= @page.url %>" method="post" onSubmit="cleanAuthorName();">
<p>
    <textarea name="content" style="width: 450px; height: 500px"><%= @page.content %></textarea>
</p>
<p>
    <input type="submit" value="Submit" accesskey="s"/> as 
    <input type="text" name="author" id="authorName" value="<%= @author %>" 
        onClick="this.value == 'AnonymousCoward' ? this.value = '' : true" />
    | <a href="../cancel_edit/<%= @page.url %>" accesskey="c">Cancel</a> <small>(unlocks page)</small>
</p>
</form>

<script language="JavaScript1.2">
function cleanAuthorName() {
  if (document.getElementById('authorName').value == "") {
    document.getElementById('authorName').value = 'AnonymousCoward';
  }
}
</script>